Fabrication of cellulose aerogel from wheat straw with strong absorptive capacity

2014, Volume 1, Issue 1

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Frontiers of Agricultural Science and Engineering >> 2014, Volume 1, Issue 1 doi: 10.15302/J-FASE-2014004

Fabrication of cellulose aerogel from wheat straw with strong absorptive capacity

Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China

Available online: 2014-05-22

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Abstract

An effectively mild solvent solution containing NaOH/PEG was employed to dissolve the cellulose extracted from the wheat straw. With further combined regeneration process and freeze-drying, the cellulose aerogel was successfully obtained. Scanning electron microscope, X-ray diffraction technique, Fourier transform infrared spectroscopy, and Brunauer-Emmett-Teller were used to characterize this cellulose aerogel of low density (about 40 mg·cm ) and three-dimensional network with large specific surface area (about 101 m ·g ). Additionally, with a hydrophobic modification by trimethylchlorosilane, the cellulose aerogel showed a strong absorptive capacity for oil and dye solutions.

Keywords

cellulose aerogel ; absorptive capacity ; waste wheat straw ; freeze-drying

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